Printing-press



NQ.75 3,061. V w

. v PAIBNTED FEB. 23, 1904; J. A. GATES. PRINTING PRESS.

: APPLICATION FILED SEPT. 5, 1903.

N0 MODEL,

UNITED STATES Patented February 23, 1904:.

PATENT OFFICE.

JOHN A. GATES, OF ALLEGHENY, PENNSYLVANIA;

PRINTING-PRESS.

SPECIFICATION forming'part of Letters Patent N0. 753,661, dated February23, 1904.

Application filed deptemher 5, 19 03. $erialN0.l'72.13l. (N0 model.)

To all whom it may concern:

Be it known that I, JOHN A. GATES, a citizen of the United States ofAmerica, residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inPrinting- Presses, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new and useful improvements inattachments for printing-presses; and the primary object of theinvention is to provide means for the automatic spring-pressed stripsmay be kept free of ink.

The construction will be hereinafter more specifically described indetail and then particularly pointed out in the accompanying claims, andin describing the invention reference will be had to the accompanyingdrawings, forming a part of this application, and wherein like numeralsof reference will be employed for designating like parts throughout thedifferent views, in which Figure 1 is a side elevation of a part" of aprintingpress with my improvements applied thereto. Fig. 2 is a top planview thereof.

Fig. 3 is a detail perspective view of a part of the type roll orcylinder. Fig. 4 is a like view of the impression roll or cylinder, andFig. 5 is a detail sectional view showing the depressor for engagementwith the springpressed strips.

In the drawings, 1 indicates the impression roll or cylinder.

2 is the type'roll or cylinder.

3 indicates the roll of paper to be printed, and 4 4: guide-rolls forsame.

' 5, 6, and 7 are the ink-feeding rolls, the roll 7 receiving the inkfrom tank 8 and transmitting'the ink to rolls 5 and 6.

9 is the inking-roller, which receives the ink from roller 5 and appliesthe same to the type on cylinder 2.

10 1O 10 indicate spreading-rollers for thinning the ink. Y

The rolls above designated are all suitably journaled in the supportingframe 11 and geared so as to revolve in the desired directions.

My invention is confined to improvements in the typecylinder and in theimpression cylinder or roll and will now be particularly described.

The type cylinder or roll 2 is provided with recesses 12, arrangedcircumferentially in the periphery of the roll or cylinder, either equior any desired distance apart. These recesses extend the length oftheroll. or cylinder, and fitted to work in the recesses are strips 14,held by springs 15, fastened to the under faces of the strips and to thebottom of the recesses. The ends of the strips 14: extend beyond theends of the roll or cylinder 2, as seen in Figs. 2, 8, and 5, whereby tobe engaged by depressors 16, as seen in Fig. 5, in order to depress thestrips 14 as they are passing the inkingroller 9 to prevent said rollerinking said strips. These depressors are ordinarily attached at asuitable point to the inside of the frame supporting the differentrolls. The impression-cylinder'l is also provided with peripheralrecesses 17 extending the length of the roll or cylinder and arrangedeither equi or any desired distance apart in accordance withthearrangement of the spring-strips in the type cylinder. In these recesses17v are secured cutters 18, as shown in Fig. 4: or a peferator to engagewith the paper in a manner as seen in Fig. 1. These cutters arepreferably removably secured in order that they may be removed for anydesired purpose, such as the replacing, sharpening, or desired changefrom a knife to a perforator.

The type in practice are in an electroplate v spring-pressed strips.

Which is secured upon the type -cylinder or roll on the peripherythereof between the As the spring-pressed strips are engaged by theknives or perforators, as seen in Fig. l, the paper is out or perforatedin sheets of equal length simultaneously with the printing thereof. Thedepression of the spring-pressed strips While passing the inking-rollerkeeps these strips free of ink, so that no ink-marks Will be made on thepaper at the point of cutting or perforation.

By the term cutters as herein employed I desire to be understood asreferring to either a knife to cut the papers into sheets or toperforate the same, as the device is particularlyadapted for printing onextremely thin paper,

vsuch as tissue paper and the like, to be cut or perforated into smallsheets.

While I have herein shown and described a practical embodiment of myinvention as it has been practiced by me, yet it Will be evident thatvarious changes may be made in the details of construction Withoutdeparting from the general spirit of the invention.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. In a printing press, a type cylinder, spring-pressed strips arrangedin the periphery thereof, means for inking said cylinder, and animpression cylinder with cutters arranged in its periphery to engageWith the spring-pressed strips of the type-cylinder, as and for thepurpose described.

2. In a printing press, a type cylinder, spring-pressed strips arrangedin the periphery of said cylinder, an inking-roller, means fordepressing the strips While passing the inking-cylinder to keep the samefree of ink, and an impression-cylinder carrying cutters to engage thespring pressed strips, as and for the purpose described.

In testimony WhereofI affix my signature in the presence of tWoWitnesses.

JOHN A. GATES.

Witnesses:

H. O. EVERT, A. M. WILSON.

